class/System.Data/System.Data.Configuration.jvm/GlobalConfig.cs

   1 //
   2 // System.Data.Configuration.GlobaConfig.cs
   3 //
   4 // Authors:
   5 //      Konstantin Triger <kostat@mainsoft.com>
   6 //
   7 // (C) 2005 Mainsoft Corporation (http://www.mainsoft.com)
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System.Collections;
  32 using System.Configuration;
  33 using System.Xml;
  34 using System.Collections.Specialized;
  35
  36 namespace System.Data.Configuration {
  37
  38         internal enum BooleanSetting {
  39                 False,
  40                 True,
  41                 NotSet
  42         }
  43
  44         internal sealed class Switches {
  45
  46                 private Switches() {}
  47
  48                 const string SwitchesSection = "Mainsoft.Data.Configuration/switches";
  49                 const string PrefetchSchemaConfigName = "JDBC.PrefetchSchema";
  50                 static readonly string AppDomainPrefetchSchemaConfigName = String.Concat(SwitchesSection, "/", PrefetchSchemaConfigName);
  51
  52                 internal static BooleanSetting PrefetchSchema {
  53                         get {
  54
  55                                 object value = AppDomain.CurrentDomain.GetData(AppDomainPrefetchSchemaConfigName);
  56                                 if (value != null)
  57                                         return (BooleanSetting)value;
  58
  59                                 BooleanSetting setting = BooleanSetting.NotSet;
  60
  61                                 NameValueCollection switches = (NameValueCollection)ConfigurationSettings.GetConfig(SwitchesSection);
  62                                 if (switches != null) {
  63                                         string strVal = (string)switches[PrefetchSchemaConfigName];
  64                                         if (strVal != null) {
  65                                                 try {
  66                                                         setting = Boolean.Parse(strVal) ? BooleanSetting.True : BooleanSetting.False;
  67                                                 }
  68                                                 catch (Exception e) {
  69                                                         throw new ConfigurationException(e.Message, e);
  70                                                 }
  71                                         }
  72                                 }
  73
  74                                 //lock(AppDomainPrefetchSchemaConfigName)
  75                                 AppDomain.CurrentDomain.SetData(AppDomainPrefetchSchemaConfigName, setting);
  76
  77                                 return setting;
  78                         }
  79                 }
  80         }
  81 }